Hi,
i asked already a time ago about snapshots. I have some guests, each resides in a raw
file, placed on an ext3 fs which is on top of a logical volume, for each guest a dedicated
lv.
The raw is not a "must have", if there are obvious reasons i can convert them to
a qcow2.
What i want is a consistent backup of each guest taken overnight. If possible i won't
have downtime.
I can use the libvirt tools, but the lvm way seems to be more elegant.
Before copying the file the guests resides in i take a snapshot from the respective lv.
Then i mount the snapshot and transfer it via rsync on a CIFS share.
Rsync seems to be the appropriate tool because i just transfer the changes in the file
compared to the file from a day before. So i don't have to transfer complete and big
raw files but just the difference.
The guest still can be running, and after the transfer of the snapshot file i just delete
it, and the next night the same procedure.
What do you think ?
Bernd
--
Bernd Lentes
Systemadministration
Institut für Entwicklungsgenetik
Gebäude 35.34 - Raum 208
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